I bought a pair of these for use with my snare cajon in my custom cajon drum kit. They do what it is said they do. They are quite precise and there is no sound when you raise your hand back, they speak only on your down stroke. This is truly great! But, the sound character is where I'm still trying somehow to like them. This is not your soft, mellow, white-noisy shaker that simply fills the beat, but they come with a character that sometimes works and sometimes it doesn't. It's a metallic, almost a tiny tambourine sound, a bit on the aggressive side. It's great for louder playing, but in softer settings they don't work too well for my taste. I'm already thinking of opening them up and replacing the material with something that would give a softer sound.